You can find your corresponding surveys at https://secure3.rhq.com/asmc/pdi18/attupdate/index.cgi. Log in with the email address and registration code you used during PDI 2018.
Under your profile information on the next landing page, you will see a series of links. Within those links, you will find a link that will take you to your applicable course surveys!
Please complete your course surveys by June 8.